AfroDJMac

Ableton Certified Trainer Brian Funk has some amazing resources for Ableton available at his site, AfroDJMac. You'll find samles packs, presets, instruments, tutorials and his awesome Music Production Podcast.

Bedroom Producer's Blog

BPB is one of my personal favourite sites for music production. They focus on a broad range of music production tools, not just Ableton Live. The absolute best part of the site though... their insane listing of Free VSTs and Free Samples to download!